Unlike metallic magnets, Ferrite ring magnets are electrically non-conductive. This characteristic can be advantageous in certain electromagnetic designs, preventing eddy current losses and reducing electrical interference in devices such as transformers and inductors.

Ferrite ring magnets find extensive use in multiple industries due to their favorable characteristics:

Electric Motors and Generators: Their ring shape fits naturally in rotor or stator assemblies, providing the magnetic flux needed for electromagnetic torque production.

Loudspeakers and Audio Equipment: Ferrite ring magnets help convert electrical signals into sound waves by interacting with voice coils.

Magnetic Couplings: The ring geometry allows non-contact torque transfer in pumps or mixers, where a magnetic coupling eliminates the need for mechanical seals.

Sensors and Actuators: Ferrite ring magnets serve as essential components in position sensors, encoders, and linear actuators due to their stable magnetic fields.

Magnetic Bearings and Clutches: Their shape and magnetic performance enable smooth and efficient operation in frictionless bearing systems and clutches.

When selecting ferrite ring shape magnets, several practical factors should be considered to ensure optimal performance:

Dimensions and Tolerances: Precise sizing is critical to fit specific assemblies and achieve desired magnetic field characteristics.

Magnetization Direction: The orientation of magnetization (axial or radial) must align with the application requirements for effective operation.

Mechanical Handling: Careful handling and protective packaging are important to prevent damage given the brittle nature of the material.

Environmental Conditions: Although ferrite magnets are corrosion-resistant, application environments with extreme mechanical stress or thermal shock should be evaluated carefully.

https://www.mlmagnet.com/product/ferrite-permanent-magnets/ferrite-ring-shape-magnets/

Perforated ferrite permanent magnets are widely used in Microwave， Antenna， Electronics, and Communication industries. The perforated ferrite permanent magnet features a high permeability and high coercivity. Their main features include small size, lightweight, superior performance characteristics, and suitability for several application areas.